Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 273, NWS Atlanta, GA

August 9, 1990Catoosa County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 9, 1990, 9:51 PM EDT for Catoosa County, Georgia. It was in force for 69 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 9, 1990, 9:51 PM EDT (01:51 UTC)
Expired
Aug 9, 1990, 11:00 PM EDT
In force
69 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Catoosa County, GA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Aug 9, 10:15 PM EDTThunderstorm Wind 0Catoosa, GA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 1.9 hours before the alert went out and 190 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 1990-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1281 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 1990-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1281 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1398 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
-9 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Aug 9, 9:21 PM EDT, 30 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ATLANTA, GA
920 PM EDT THU AUG 9 1990

COUNTY......  5 MILES NORTH OF CANTON IN CHEROKEE COUNTY
              WHERE GA HIGHWAYS 5 AND 108 SPLIT
SOURCE......  GEO#RGIA STATE PATROL
TIME........  902 PM
TYPE STORM..  SEVERE THUNDERSTORM
              GOLF BALL SIZE HAIL
INJURIES...   NONE REPORTED.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 8:30 PM EDTSevere Thunderstorm WarningFFCWhitfield60 min
Aug 9, 8:45 PM EDTSevere Thunderstorm WarningFFCCherokee45 min
Aug 9, 8:57 PM EDTSevere Thunderstorm WarningFFCWalker63 min
Aug 9, 10:43 PM EDTSevere Thunderstorm WarningFFCFloyd47 min
Aug 9, 11:13 PM EDTSevere Thunderstorm WarningFFCHall40 min
Aug 9, 11:57 PM EDTSevere Thunderstorm WarningFFCPaulding33 min
Aug 10, 12:31 AM EDTSevere Thunderstorm WarningFFCCarroll, Douglas29 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1990Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.